Pure tin and aluminum foil
Tin is the fourth precious metal behind platinum, gold and silver. Pure tin is rich in luster, non-toxic, not easy to oxidize and discolor, and has good sterilization, purification and fresh-keeping effects. The chemical nature of tin is very stable, and it is not easy to oxidize at normal temperature, so it often maintains a silvery luster.
Please note that pure tin is non-toxic.
Aluminum foil is produced by rolling aluminum. The thickness applied to food packaging is 0.006-0.3mm. So aluminum foil and tin are completely different. The lunch box on our plane is an aluminum foil product. Because aluminum foil can be heated in a microwave oven, but tin cannot.